Signal-horn



E. AUFIERO.'

SIGNAL HORN.

APPLICATION FILED MAY I2, I91?:

Patented Mar. 9, 1920.

EMANUEL aurrnno, or BROOKLYN, EW YORK.

I SIGNAL-HORN.

- Specification of Letters Patent.

Application filed May 12, 1917. Serial No. 168,101.

To all whom it may concern:

Be it known that I, EMANUEL AUrLnRo, a citizen of the United States, and a resident of Brooklyn, county of Kings, and State of New York, have-invented new and useful Improvements in Signal-Horns, of

which the following is a specificatiom This invention relates to warmng slgnals and particularly to signals .for automobiles of thetype in which the signal is v operated by power from the driving motor.

The principal object of my invention is to 'provide'a signal of this class which is of simple construction, involving no del1cate parts to get out of order, and WlllCll may befla'pplied to any form of motor without 1 change in any part of the motor construction.

A further object of the invention is to provide a horn of this class which will yproduce a sound equal in volume andpeneii 3 is a detached VieW of the signal of the signal.

tration to that of the higher priced electric horns supplied as part of the equipment of high rade automobiles, which will bemore 'reliab e in operation than the electrical horn and at the same time of low manufacturing cost.

In the accompanyin drawings 1 have illustrated a typical em diment of my 1nvention as applied to adriving motor of conventional design, but it is to be understood that the construction disclosed is by way of example only, and that the details thereof may be widely varied without departing from the 'spirit and scope of my 7 invention.

In said drawings,

Figure is a front elevation of a typical automobile engine with my improved signal attached thereto;

Fig. 2 is a plan view of a portion of operating mechanism; and

Fig. 4 is a detail vertical section on an enlarged scale of the sounding mechanism eferring to the drawings, 1 indicates]- the frame of the horn, here shown as com-- prising a bracket 2 for attachment to the.

. automobile engine, for instance the hub of the fan. bearing as illustrated 1n Figs. 1

and 2;, At the end of the bracketis supported the stationary shaft 3 on wh1ch is mounted the serrated cam wheel at by means of which the diaphragm 5' is vibrated to produce the signal.

The diaphragm is supported between clamping rings 6, one of which is fixedly supported on the shaft 3 by means of the arms 7 to maintain the diaphragm in fixed relation with the cam Wheel. Attached to the center of the diaphragm by riveting, welding or otherwise, is a lug 8 which is bifurcated as shown to form a bearing for a lever 9, one end of which is curved away from the diaphragm to a position in close proximity to the teeth of theratchet 4. This end of the lever is short and is in effect a contact point through which the vibratory effect of the serrated cam is transmitted to the diaphragm. The other arm of the lever 9 extends-tea point beyond the periphery of the diaphragm and is curved away from the diaphragm'as shown.

I The long end of the lever is held away from the diaphragm a sufficient distance to withdraw the lower or toothed end of the Patented Mar. 9, 1920.

lever from the path of the teeth of the cam of the lever.

The pin 12 forms the reduced end of an adjusting screw 13 which serves as one of the clamping screws of i 6. 1 The screw 13 supports a rubber plug or stop 15 whose rear face engages the shoulder at the base of the reduced end 12 of the screw, the rubber plug forming the abutment for the spring 10 whose other end projectsinto a recess or socket 16 formed on the rear face of the lever 9 so that when the outer end of thelever 9 is drawntoward the'rubber stop 15 by means of the actuating chain" or cable 17, the compressed spring will enter the socket 116 and allow the edge of the socket to contact with the rubber stop to definitely limit, the pivotal movement of the lever 9. i

4 The position of the rubber stop .deter minesthe. degree to which the tooth which forms the lower end of the lever projects into the path of the serrations of the cam wheel and the position of the stop may be varied by adjusting the screw. 13, the end of the screw wbeing slotted to receive a screw-driver for efi'ecting its adjustment.

the clamping rings.

the lever adjacent f 0 pin 12 which pro ects through a slot in the end" The stop 11 may also be adjustable en the pin 12 to vary the amplitude of'movement of the lever, but this is not necessary, as the extent to which the toothed end of the lever clears the cam teeth is not material.

The cam Wheel is designed to be continuously driven when the car is in motion by means of a pulley l8 fixed to one face of 'the cam Wheel, the pulley being driven in the construction shown by contact with the belt through which the fan is driven from the motor. The pulley may, however, be driven from any other convenient rotatin part of the engine he operation of the apparatus will now be described. When it is desired to sound the signal, the chain or cord is pulled to draw the free end of the lever 9 against the rubber stop 15, thereby projecting the opposite toothed end of the lever into the path of the rapidly rotating Lcam teeth. The lever 9 then acts in thesame manner as the fixed contact point of present diaphragm horns to produce a rapid vibration of the diaphragm, the rapidity of the vibrations depending upon the speed of rotation of the cam wheel and the amplitude upon the extent to which 7 the end of the lever 9 is projected into the path of the cam teeth.

By having the end of the lever to which the cord is attached long in comparison with the other end, the lever may be held in op-, erative position withvery little force applied to the end of the chain. In fact, little more force is required than to compress the light spring 10 and as the plug 15 is'of rub her, it acts as a cushion for the end of the lever and absorbs the vibrations so that they are not transmitted to the hand of the operator through the chain. a

I have found that a horn or. signal constructed in accordance with the disclosure of the drawing produces a loud and piercing sound without the usual amplifiers or projectors usually supplied with horns of this type. Further, the mechanism of the horn is of a character such as not to require a protective casing and may be left entirely exposed; thus further cheapening the cost of the horn'and rendering it easy of repair and adjustment. As the hornv is necessarily mounted on the hood adjacent the engine, the appearance of the horn is immaterial.

I claim:

1. In a warning signal of the character described, the combination of a fixedly supported diaphragm, a .continuously rotating actuating member mounted adjacent the diaphragm, and means for vibrating said dia-- phragm from said rotating member comprising a part attached to said diaphragm and adapted to be pro ected into the path of movement of said operating member.

2. In a signal of the class described, the

combination of a fixedly supported diaphragm to be vibrated an operating member provided with projectlons and mounted for 1 rotation adjacent said diaphragmfsiiid member adapted to be continuously driven, and a sh-iftable member controlled by the operator and adapted to be projected into operative engagement with said rotatin member and said diaphragm to be vibrate by said projections and transmit the vibrations to said diaphragm.

3. In a signal of the class described, the

combination of a diaphragm to be vibrated, an operating member provided with projections and mounted for rotation adjacent said diaphragm and in fixed position with rela tion thereto, said member adapted to be continuously driven,.an operating member at- .tached to said diaphragm and normallymaintained out of the. path of movement of said projections, and means for projecting said operatinomember into the path of said projections w ien itis desired to sound the signal. j

4. In a signal of the class described, the combination of a diaphragm to be vibrated, an operating member provided with projections and mounted for rotation adjacent said diaphragm and in fixed position with rela-- "tion thereto, said member adapted to be continuously driven, and a lever pivoted to said dlaphragm and having its end positioned to be projected into the path of said projections f upon movement of the lever in one direction,

and means for normally maintaining the said lever with its end just beyond the path of movement of the projections. V

6. In a signal apparatus for motor vehicles, the combination of a supporting bracket ada ted to be connected to the motor of the ve icle, a'serrated member mounted forrotation in said bracket, connections between said serrated member and said mo-.

ter for continuously driving the latter, a dlaphragm supported on said bracket ad-- j acent the said serrated member, a lever pivoted on said diaphragm having one end curved outwardly in the form of a short tooth to a position adjacent the serrations of said member, and means for operating said.

lever to project said tooth into the path of the serrations to vibrate the diaphragm.

7. In a signal apparatus for motor vehicles, the combination of a supporting bracket adapted to be connected to the motor of the vehicle, a serrated member mounted for rotation in said bracket, connections between said serrated member and said motor for "continuously driving the latter, a diaphragm supported on said bracket adjacent the said serrated member, a lever pivoted on said diaphragm having one end curved outwardly in the form of a short tooth to a position adjacent the serrations of said member, a resilient abutment supported adjacent the other end of said lever, means for normally holding said end away from said abutment and a connection to the said end of the lever whereby it may be drawn against said abutment to project the tooth of the lever into the path of the serrations to sound the diaphragm.

8. In a signal of the class described, the

combination of a fixedly supported vibratory sounding member, a continuously driven serrated member mounted in fixed bearings adjacent the sounding member, and an operating member for the sounding member adapted to be projected at will into the path of the serrations of the continuously driven member to effect the vibration of the sounding member.

Signed at New York in the county of New York and State of New York, May, 1917.

EMANUEL AUFIERO. 

